US4709781A - Sound-damping and heat-insulating composite plate - Google Patents

Sound-damping and heat-insulating composite plate Download PDF

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US4709781A
US4709781A US06/799,160 US79916085A US4709781A US 4709781 A US4709781 A US 4709781A US 79916085 A US79916085 A US 79916085A US 4709781 A US4709781 A US 4709781A
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core
metal
particles
rubber
adhesive
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US06/799,160
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Wilhelm Scherzer
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Austria Metall AG
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Austria Metall AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/06—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/042—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2272/00—Resin or rubber layer comprising scrap, waste or recycling material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/026—Porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/24—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/30—Iron, e.g. steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2319/00—Synthetic rubber
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B2001/742—Use of special materials; Materials having special structures or shape
    • E04B2001/746—Recycled materials, e.g. made of used tires, bumpers or newspapers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249986—Void-containing component contains also a solid fiber or solid particle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249987—With nonvoid component of specified composition
    • Y10T428/24999—Inorganic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/254—Polymeric or resinous material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31692—Next to addition polymer from unsaturated monomers
    • Y10T428/31699—Ester, halide or nitrile of addition polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31707—Next to natural rubber

Definitions

  • My present invention relates to a composite plate structure and, more particularly, to a composite plate or panel capable of absorbing vibration and shock waves and thus having accoustic-damping and vibration-damping effects while, at the same time, possessing low thermal conductivity and thus acting as a thermal barrier or thermal insulation.
  • the invention also relates to a method of making such a composite plate.
  • Metal-elastomer composites are widely in use for a variety of purposes and have various constructions and configurations.
  • metal-elastomer composites which can comprise a pair of metal bodies, e.g. plates or sheets, which have a solid elastomer body vulcanized to the adjoining surfaces of the metal sheets.
  • Such composites are widely in use as shock absorbers, as vibration-absorbing supports or barriers, as sound-damping partitions and elements, and even as elastomer springs to provide restoring and oscillation-damping phenomena for vibrations and oscillations transverse to the sandwich or composite structure and even in planes parallel to the aformentioned surfaces.
  • the relative movements of the two metal members are imparted to the solid elastomeric body which is thereby subjected to torsion, tension, compression and/or shear and which elastically deforms under such stresses and can thereby transform such vibrations and oscillations to heat by internal molecular movement within the elastic limits of the body.
  • composite plates utilizing synthetic resin cores which are generally inelastic or at most have only a fraction of the elastomeric character of rubber, can be provided as heat-barrier or insulating layers.
  • a more specific object of this invention is to provide an improved composite plate of the type in which an elastomer is sandwiched between a pair of metal members and which has excellent sound-damping, vibration-damping and oscillation-damping properties, but also has excellent heat-barrier or heat-lagging (thermal insulation) properties.
  • Still another object of the invention is to provide a composite structure which is capable of use as an elastomer spring but which has high heat-resistance and thermal-insulation capabilities.
  • a metal/elastomer composite which comprises a porous elastomer core composed of an interbonded elastomer, namely rubber particles, which is sandwiched between a pair of metal layers to which this core is bonded, the particles of the core being composed of rubber scrap or granules.
  • the porosity of the core can be comparatively high, and the bonding of the particles together can be a minimum so that the particles need merely be retained in a coherent layer or body, the result is a relatively light weight plate which has excellent sound and heat-damping properties and, because of the comparatively high pore volume minimizing thermal conduction, the heat resistance of the panel is high and indeed an important utility of the composite plate of the invention is as a fire barrier in structures.
  • the rubber granules are preferably ground up used pneumatic vehicle tires and these particles can be bonded by an appropriate bonding agent or adhesive, e.g. a small quantity of a polyacrylate film, into a porous web having a thickness of 4 to 10 mm which can then be sandwiched between a pair of metal cover layers or sheets, e.g. of iron or aluminum.
  • the sheets can be bonded to the web.
  • FIG. 1 is a diagrammatic cross section through a composite plate embodying the principles of the invention.
  • FIG. 2 is a diagrammatic elevational view of an apparatus for producing the composite plate of the invention and illustrating the fabrication thereof.
  • a composite metal/elastomer body can comprise a pair of metal cover plates 1 which can be iron or steel or aluminum sheets, e.g. of a thickness of 4 to 10 mm, between which a web 2 previously formed of porous rubber scrap is sandwiched so that these sheets coat the elastomer core.
  • the layer 2 which can also have a thickness of say 4 to 10 mm, can be formed by simply grinding worn pneumatic vehicle tires or by milling such tires after cryogenically cooling them to embrittle the tires.
  • the elastomer particle size can be from 50 microns to say 1 mm.
  • the particles may be spray-coated with any suitable bonding agent, e.g. a polyacrylate which is used in a minimum quantity sufficient to enable the elastomer particles to adhere to one another without material reduction porosity.
  • the pore volume can range between 10 and 80% of the volume of the layer depending upon the size of the particles used.
  • the metal sheets 1, whose external surfaces can be previously lacquered, anodically oxidized or otherwise decorated, e.g. with a decorative foil, have their juxtaposed faces coated with a thermally activated adhesive which can be applied as a foil to opposite sides of the rubber scrap core 2.
  • the heat-activated foils 3 can have different adhesives on their opposite sides, being provided with a metal adhesive on the side facing the metal sheet and an elastomeric adhesive on the side facing the rubber core.
  • the stack is assembled at a feed station 4 and then passed through a preliminary press 4a before the compressed stack is introduced into a continuous heating station 5 through which the laminated body is passed continuously.
  • the heating station 5 the stack is heated to a temperature just slightly above the thermally active temperature of the adhesive foils 3.
  • the stack is then pressed between two heated rubber rollers 6 in a compression stage which applies a linearly advancing compression and heating effect to the laminate to effectively bond the thermally activated surfaces to the metal sheets and the core.
  • the panel is then passed through a cooling station 7.
  • the resulting plates have been found to have high elasticity, are resistant to bending and are amenable to attachment to supports and the like by screws threaded into the composite and rivets traversing same.
  • the panel is corrosion-resistant and can be used as facing members wherever high acoustic damping and fire retardancy is desired, and is especially effective for wall, roof and floor coverings.
  • the high resilience allows them to be used with excellent effect for table tennis tables, switch cabinet linings, air conditioning ducts, door coverings, machine enclosures and transport structure.

Abstract

A sound-damping composite panel with elastic properties is provided by disposing a prefabricated porous core made from rubber granules or scrap, e.g. rubber tire scrap, between a pair of metal layers or sheets, e.g. of aluminum, and adhesively bonding the metal layers to the core under heat and pressure.

Description

FIELD OF THE INVENTION
My present invention relates to a composite plate structure and, more particularly, to a composite plate or panel capable of absorbing vibration and shock waves and thus having accoustic-damping and vibration-damping effects while, at the same time, possessing low thermal conductivity and thus acting as a thermal barrier or thermal insulation. The invention also relates to a method of making such a composite plate.
BACKGROUND OF THE INVENTION
Metal-elastomer composites are widely in use for a variety of purposes and have various constructions and configurations. For example, it is known to provide metal-elastomer composites which can comprise a pair of metal bodies, e.g. plates or sheets, which have a solid elastomer body vulcanized to the adjoining surfaces of the metal sheets.
Such composites are widely in use as shock absorbers, as vibration-absorbing supports or barriers, as sound-damping partitions and elements, and even as elastomer springs to provide restoring and oscillation-damping phenomena for vibrations and oscillations transverse to the sandwich or composite structure and even in planes parallel to the aformentioned surfaces.
As is well known with such composites, the relative movements of the two metal members are imparted to the solid elastomeric body which is thereby subjected to torsion, tension, compression and/or shear and which elastically deforms under such stresses and can thereby transform such vibrations and oscillations to heat by internal molecular movement within the elastic limits of the body.
While such composites are highly advantageous for sound and vibration damping and as elastomer springs, and are comparatively inexpensive because they require only vulcanization of the metal surfaces of the solid elastomer body sandwiched between them, they are not satisfactory as heat-insulating members or as thermal barriers, because they have poor heat-lagging properties.
That is not to say that there are not composite structures with heat-lagging or thermal-insulation or heat-barrier properties. For example, composite plates utilizing synthetic resin cores which are generally inelastic or at most have only a fraction of the elastomeric character of rubber, can be provided as heat-barrier or insulating layers.
These composites, however, have poor sound-damping properties and heat resistance.
OBJECTS OF THE INVENTION
It is, therefore, the principal object of the present invention to provide an improved composite structure whereby the drawbacks outlined above are obviated.
A more specific object of this invention is to provide an improved composite plate of the type in which an elastomer is sandwiched between a pair of metal members and which has excellent sound-damping, vibration-damping and oscillation-damping properties, but also has excellent heat-barrier or heat-lagging (thermal insulation) properties.
Still another object of the invention is to provide a composite structure which is capable of use as an elastomer spring but which has high heat-resistance and thermal-insulation capabilities.
SUMMARY OF THE INVENTION
These objects and others which will become apparent hereinafter are attained, in accordance with the present invention, with a metal/elastomer composite which comprises a porous elastomer core composed of an interbonded elastomer, namely rubber particles, which is sandwiched between a pair of metal layers to which this core is bonded, the particles of the core being composed of rubber scrap or granules.
Because the porosity of the core can be comparatively high, and the bonding of the particles together can be a minimum so that the particles need merely be retained in a coherent layer or body, the result is a relatively light weight plate which has excellent sound and heat-damping properties and, because of the comparatively high pore volume minimizing thermal conduction, the heat resistance of the panel is high and indeed an important utility of the composite plate of the invention is as a fire barrier in structures.
The rubber granules are preferably ground up used pneumatic vehicle tires and these particles can be bonded by an appropriate bonding agent or adhesive, e.g. a small quantity of a polyacrylate film, into a porous web having a thickness of 4 to 10 mm which can then be sandwiched between a pair of metal cover layers or sheets, e.g. of iron or aluminum. The sheets can be bonded to the web.
BRIEF DESCRIPTION OF THE DRAWING
The above and other objects, features and advantages of the present invention will become more readily apparent from the following description, reference being made to the accompanying drawing in which:
FIG. 1 is a diagrammatic cross section through a composite plate embodying the principles of the invention; and
FIG. 2 is a diagrammatic elevational view of an apparatus for producing the composite plate of the invention and illustrating the fabrication thereof.
SPECIFIC DESCRIPTION
In FIG. 1, in which the dimensions of the various layers have not been shown to scale, it will be apparent that a composite metal/elastomer body can comprise a pair of metal cover plates 1 which can be iron or steel or aluminum sheets, e.g. of a thickness of 4 to 10 mm, between which a web 2 previously formed of porous rubber scrap is sandwiched so that these sheets coat the elastomer core.
The layer 2, which can also have a thickness of say 4 to 10 mm, can be formed by simply grinding worn pneumatic vehicle tires or by milling such tires after cryogenically cooling them to embrittle the tires. The elastomer particle size can be from 50 microns to say 1 mm. The particles may be spray-coated with any suitable bonding agent, e.g. a polyacrylate which is used in a minimum quantity sufficient to enable the elastomer particles to adhere to one another without material reduction porosity. The pore volume can range between 10 and 80% of the volume of the layer depending upon the size of the particles used.
As can be seen from FIG. 2, the metal sheets 1, whose external surfaces can be previously lacquered, anodically oxidized or otherwise decorated, e.g. with a decorative foil, have their juxtaposed faces coated with a thermally activated adhesive which can be applied as a foil to opposite sides of the rubber scrap core 2. The heat-activated foils 3 can have different adhesives on their opposite sides, being provided with a metal adhesive on the side facing the metal sheet and an elastomeric adhesive on the side facing the rubber core.
The stack is assembled at a feed station 4 and then passed through a preliminary press 4a before the compressed stack is introduced into a continuous heating station 5 through which the laminated body is passed continuously. In the heating station 5, the stack is heated to a temperature just slightly above the thermally active temperature of the adhesive foils 3. The stack is then pressed between two heated rubber rollers 6 in a compression stage which applies a linearly advancing compression and heating effect to the laminate to effectively bond the thermally activated surfaces to the metal sheets and the core.
The panel is then passed through a cooling station 7.
The resulting plates have been found to have high elasticity, are resistant to bending and are amenable to attachment to supports and the like by screws threaded into the composite and rivets traversing same. The panel is corrosion-resistant and can be used as facing members wherever high acoustic damping and fire retardancy is desired, and is especially effective for wall, roof and floor coverings. The high resilience allows them to be used with excellent effect for table tennis tables, switch cabinet linings, air conditioning ducts, door coverings, machine enclosures and transport structure.

Claims (7)

I claim:
1. A sound-damping composite body consisting essentially of two metal cover layers and a porous core layer, said core layer being positioned between the two metal cover layers and bonded to each of said metal layers, said core layer being composed of interbonded particles of rubber forming pores between them.
2. The body defined in claim 1 wherein said particles are rubber scrap.
3. The body defined in claim 1 wherein said particles are rubber granules.
4. The body defined in claim 1 further comprising an adhesive foil between said core and said respective metal layers, said adhesive foil having a first surface adjacent a respective metal layer whereon is formed a metal bonding adhesive affixed to said respective metal layer and a second surface of said foil adjacent said core wherein is formed a rubber bonding adhesive affixed to said core.
5. The body defined in claim 1 wherein said metal layers are bonded to said core by a thermally activated adhesive under heat and pressure.
6. The body defined in claim 1 wherein said particles are milled old pneumatic tire scrap.
7. The body defined in claim 1 wherein said particles are interbonded in said core with an adhesive.
US06/799,160 1984-11-16 1985-11-18 Sound-damping and heat-insulating composite plate Expired - Fee Related US4709781A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3632/84 1984-11-16
AT0363284A AT390094B (en) 1984-11-16 1984-11-16 SOUND-INSULATING COMPOUND PANEL AND METHOD FOR THEIR PRODUCTION

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Cited By (54)

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US4988401A (en) * 1988-06-15 1991-01-29 Cegedur Pechiney Rhenalu Process for sticking rubber to aluminum
US5100730A (en) * 1989-11-16 1992-03-31 Lambers Thomas J Structural reinforcement apparatus and method of making same
US5100733A (en) * 1988-05-17 1992-03-31 Honda Giken Kogyo Kabushiki Kaisha Combination of a rubber member and an aluminum alloy member
US5233832A (en) * 1992-05-14 1993-08-10 Soundwich, Inc. Damped heat shield
ES2042392A1 (en) * 1991-02-25 1993-12-01 Colognori Umberto Method of processing rubber blocks with steel
US5335463A (en) * 1991-09-16 1994-08-09 Per Reinhall Composition for vibration damping
US5438806A (en) * 1993-12-13 1995-08-08 Reinhall; Per Composition for vibration damping
US5444959A (en) * 1989-07-31 1995-08-29 Tesch; Gunter Three-dimensional structural component
US5484970A (en) * 1993-06-07 1996-01-16 Zeon Kasel Co., Ltd. Acoustic insulator
US5502931A (en) * 1992-04-08 1996-04-02 Munir; Hussain Building element and method of manufacturing such element
US5545861A (en) * 1992-03-13 1996-08-13 Toru Morimoto Membranous-vibration sound absorbing materials
US5550338A (en) * 1990-11-12 1996-08-27 Matec Holding Ag Disposable thermal shield
US5590524A (en) * 1992-05-14 1997-01-07 Soundwich, Inc. Damped heat shield
US5965249A (en) * 1997-08-07 1999-10-12 Gore Enterprise Holdings, Inc. Vibration damping composite material
US5975238A (en) * 1995-02-24 1999-11-02 Fraunhofer Gesellschaft Zur Foerderung Der Angewandten Forschung E. V. Plate resonator
US6062624A (en) * 1998-04-21 2000-05-16 Lear Corporation Sealing acoustical baffle and method therefor
US6213252B1 (en) * 1996-11-08 2001-04-10 Royal Mat International Inc. Sound absorbing substrate
US6279229B1 (en) * 1998-08-28 2001-08-28 Dana Corporation Method for producing a heat shield and heat shield produced by this method
EP0916865A3 (en) * 1997-11-13 2001-12-05 Nichias Corporation Squeak preventing shim
US6455146B1 (en) 2000-10-31 2002-09-24 Sika Corporation Expansible synthetic resin baffle with magnetic attachment
US20030151274A1 (en) * 2000-05-29 2003-08-14 Claude Buisson Lightweight vehicle flooring assembly
US6770374B1 (en) 1998-06-05 2004-08-03 Basf Aktiengesellschaft Composite elements containing compact polyisocyanate polyaddition products
US6790537B1 (en) 1999-03-30 2004-09-14 Basf Aktiengesellschaft Composite elements containing polyisocyanate-polyaddition products
US20040238276A1 (en) * 2003-06-02 2004-12-02 Calin Matias Acoustical heat shield
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US6966402B2 (en) 2003-06-02 2005-11-22 Dana Corporation Acoustical heat shield
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US20070169991A1 (en) * 2003-06-26 2007-07-26 Ulrich Bertsch Device and method for heat and noise insulation of motor vehicles
US20080098935A1 (en) * 2004-12-29 2008-05-01 Roth Arthur J Composite Structural Material and Method of Making the Same
US8181580B2 (en) 2004-12-29 2012-05-22 Coda Capital Mangement Group, LLC Composite structural material and method of making the same
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US20100207290A1 (en) * 2005-02-09 2010-08-19 Intellectual Property Holdings, Llc Body panel having improved stiffness and method of making
WO2006105904A1 (en) * 2005-04-07 2006-10-12 Isolgomma S.R.L. Multi-layer sound insulation product for the building industry, method for its production and plant for implementing the method
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US20110100747A1 (en) * 2006-05-24 2011-05-05 Airbus Operations Gmbh Sandwich element for the sound-absorbing inner cladding of means of transport, especially for the sound-absorbing inner cladding of aircraft
WO2007137393A1 (en) * 2006-05-30 2007-12-06 Soprema Inc. Thermo-acoustic radiant membrane
US20100062241A1 (en) * 2006-05-30 2010-03-11 Soprema Inc. Thermo-acoustic radiant membrane
US7799840B2 (en) 2006-09-12 2010-09-21 Intellectual Property Holdings, Llc Thermoplastic vibrational damper with constraining layer
US7722112B2 (en) 2006-09-27 2010-05-25 Wabash National, L.P. Composite panel for a trailer wall
US20080111393A1 (en) * 2006-09-27 2008-05-15 Ehrlich Rodney P Composite panel for a trailer wall
US9324312B2 (en) * 2007-12-21 2016-04-26 3M Innovative Properties Company Viscoelastic phononic crystal
US20100288580A1 (en) * 2007-12-21 2010-11-18 3M Innovative Properties Company Sound barrier for audible acoustic frequency management
US8132643B2 (en) * 2007-12-21 2012-03-13 3M Innovative Properties Company Sound barrier for audible acoustic frequency management
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US8727071B2 (en) 2009-06-25 2014-05-20 3M Innovative Properties Company Sound barrier for audible acoustic frequency management
US11420433B2 (en) 2010-08-10 2022-08-23 Wabash National, L.P. Composite panel having perforated foam core and method of making the same
US9908315B2 (en) 2010-08-10 2018-03-06 Wabash National, L.P. Composite panel having perforated foam core and method of making the same
US8474572B2 (en) * 2011-08-25 2013-07-02 General Electric Company Apparatus and method to attenuate vibration and acoustic noise
WO2013185221A1 (en) * 2012-06-12 2013-12-19 Gestion Soprema Canada Inc. Acoustic core which can be built into a structure
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US20150279345A1 (en) * 2014-03-27 2015-10-01 Abhishek Mathur Acoustic metamaterial architectured composite layers, methods of manufacturing the same, and methods for noise control using the same
US9390702B2 (en) * 2014-03-27 2016-07-12 Acoustic Metamaterials Inc. Acoustic metamaterial architectured composite layers, methods of manufacturing the same, and methods for noise control using the same
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EP0181627A2 (en) 1986-05-21
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AT390094B (en) 1990-03-12

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